Merge from trunk

[plcapi.git] / trunk / PLC / InitScripts.py

diff --git a/trunk/PLC/InitScripts.py b/trunk/PLC/InitScripts.py
new file mode 100644 (file)
index 0000000..9f864d2
--- /dev/null
+++ b/trunk/PLC/InitScripts.py
@@ -0,0 +1,66 @@
+#
+# Functions for interacting with the initscripts table in the database
+#
+# Tony Mack <tmack@cs.princeton.edu>
+# Copyright (C) 2006 The Trustees of Princeton University
+#
+#
+
+from types import StringTypes
+from PLC.Faults import *
+from PLC.Parameter import Parameter
+from PLC.Filter import Filter
+from PLC.Table import Row, Table
+
+class InitScript(Row):
+    """
+    Representation of a row in the initscripts table. To use,
+    instantiate with a dict of values.
+    """
+
+    table_name = 'initscripts'
+    primary_key = 'initscript_id'
+    join_tables = []
+    fields = {
+        'initscript_id': Parameter(int, "Initscript identifier"),
+        'name': Parameter(str, "Initscript name", max = 254),
+        'enabled': Parameter(bool, "Initscript is active"),
+        'script': Parameter(str, "Initscript"),
+        }
+
+    def validate_name(self, name):
+       """ 
+       validates the script name 
+       """
+       
+       conflicts = InitScripts(self.api, [name])
+       for initscript in conflicts:
+           if 'initscript_id' not in self or self['initscript_id'] != initscript['initscript_id']:
+               raise PLCInvalidArgument, "Initscript name already in use"
+
+       return name
+
+
+class InitScripts(Table):
+    """
+    Representation of the initscipts table in the database.
+    """
+
+    def __init__(self, api, initscript_filter = None, columns = None):
+       Table.__init__(self, api, InitScript, columns)
+
+        sql = "SELECT %s FROM initscripts WHERE True" % \
+              ", ".join(self.columns)
+
+        if initscript_filter is not None:
+            if isinstance(initscript_filter, (list, tuple, set)):
+               # Separate the list into integers and strings
+                ints = filter(lambda x: isinstance(x, (int, long)), initscript_filter)
+                strs = filter(lambda x: isinstance(x, StringTypes), initscript_filter)
+                initscript_filter = Filter(InitScript.fields, {'initscript_id': ints, 'name': strs })
+               sql += " AND (%s) %s" % initscript_filter.sql(api, "OR")
+            elif isinstance(initscript_filter, dict):
+                initscript_filter = Filter(InitScript.fields, initscript_filter)
+               sql += " AND (%s) %s" % initscript_filter.sql(api, "AND")
+
+        self.selectall(sql)